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29/10/2020 1:04 pm
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Which among the following is a rootless plant?
(a) Nymphaea
(b) Sagittaria
(c) Ceratophyllum
(d) Vallisneria
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29/10/2020 1:05 pm
(c) Ceratophyllum
Explanation:
Nymphaea, Sagittaria, Ceratophyllum and Vallisneria are hydrophytes which grow in water. Nymphaea, Sagittaria and Vallisnaria are rooted hydrophytes while Ceratophyllum is a submerged floating hydrophyte. It remains completely under water but is not rooted in mud. Ceratophyllum lacks roots even in embryonic stage.